Prepar3D Forums

Hi LM,

I wondered if you had any plans to improve the flight modelling of prop and jet simulations with Prepar3d? Can you at least allow proper spin and stall flight modelling, this Is part of the UK and US PPL flight syllabus to be able to handle a stall correctly as well as be able to recover from a spin, very easy to do in a C172 with a very slow large turn and a good dose of rudder :) I am using the simulator to train and practice for my PPL and some aspects like the above leave a lot to be desired, even A2A developer aircraft cannot simulate this properly.

Outside influences on the plane, can they also be looked at? What I mean is default planes fly like they are on a rail track, in fact so do most developers planes with a few exceptions. This is not true in the training world, when you are descending and at least 600ft above the runway coming into land you get buffeted you can't just take your hands off the yoke expecting to land straight but in the sim you pretty much can! (Well you lose height but direction is pretty consistent) Oh on a separate note please can you look at the default turbulence model and the SDK regarding this as 2G is just too much :) That effect is totally unrealistic buffeting on the airframe.

Please Please can you look at the PDK/SDK and the flight model specifically and fix those bugs/flight model inaccuracies and add more tools and features that will allow the development community A2A, PMDG, Captain Sim, Aerosoft and FSL to produce higher fidelity flight models within their products so we can continue to use this training platform for high fidelity training!

Thanks in advance

Kind regards

Duncan Odgers

A picture or in this case a video paints 1000 words. This is part of what I was trying to articulate regarding flight modelling. Please see the video from 11.30 to 16.00 I must stress I am only interested in the flight model not the other things raised by the video

https://www.youtube.com/watch?v=WCV3c8uzUt0

Thanks

Kind regards

Duncan Odgers

Stall and spin modeling can be done very realistically in P3D using various tables in the .air file. Hammerhead maneuvers, tailslides, and all manner of acrobatics can be created with great authenticity. However, it takes a lot of time to get this stuff right. Are you familiar with the particular tables in the .air file?

If you really want to follow up on this, a force-feedback system is very helpful in feeling the stall onset and training a pilot to quickly recover.

Your comment that stall and spin modeling can be done very realistically in P3D using various tables is of great interest to me. I am experimenting with tweaking the .air file for an aircraft to get it to spin properly. I'm doing this in collaboration with a friend who has a Phd in aeronautics and really does understand this stuff. We can model the spin entry reasonably well and I'm sure we can fiddle to improve this. However if held in the spin for anytime the airspeed increases so that Vne is exceeded either before or during the recovery.

We believe that the Parameter Cdo needs to be increased with angles of attach near or beyond the stall. We cannot find anyway of altering Cdo with AoA. If you know how to do this or any work around I would be grateful.

Thanks

Richard